import java.util.Set;

public  class test{
    public static void main(String[] args) {
     dog d= new dog();
     d.setAge(13);
     System.out.println(d.getAge());  
    }
}
class dog{
    private int age=10;
    public void setAge(int age) {
        this.age = age;
    }
    public int getAge() {
        return age;
    }
}